ATL07CA097

NTSB accident investigation · Sherman John, H Nieuport II · Binghamton, NY · June 25, 2007

Accident · Minor injuriesData collectionFinal report
Date
June 24, 2007, 20:00 local (Jun 25, 2007, 00:00 UTC)
Place
Binghamton, NY
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N3124USherman John, H Nieuport II
Weather
Visual (VMC) · Dusk
Status
Completed · report August 30, 2007
Report
Approved by Office Director
Parties
Rodchester FSDO
FAA report
20070624014789A
Case key
66085

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The failure of the main gear spring during landing, which resulted in a loss of directional control, and a nose over.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of control - on ground/waterLanding - roll
Directional control - not possiblePilot in command
Landing gear,main gear spring - failureCause
Nose overLanding - roll
Terrain condition - runway

Analysis

According to the pilot, he was test flying the airplane after modifying the landing gear suspension. He stated that the takeoff was routine, and that he stayed over the airport for about 30 to 45 minutes. He said he landed, and upon touchdown on the main wheels, the airplane "deliberately" went to the left. He applied right rudder with no response, and the right wing struck the ground and flipped the airplane inverted. According to the pilot, damage to the airplane consisted of the right upper and lower wing, the left upper wing, and the landing gear. He stated that the parts that failed during the accident were the landing gear lateral cable and the spring windings. The pilot's recommendation to prevent this from happening again would be to have the airplane inspected by an FAA Inspector, and to do more taxi testing before flight.

Factual narrative

According to the pilot, he was test flying the airplane after modifying the landing gear suspension. He stated that the takeoff was routine and that he stayed over the airport for about 30 to 45-minutes. He said he landed to the west and upon touchdown on the main wheels the airplane "deliberately" went to the left. He applied right rudder with no response and the right wing struck the ground and flipped the airplane completely over. He shut the airplane down, released his restraints and exited without injury.

The pilot further stated that he had had two previous landing gear center bar failures and had reinforced the center tube to a larger diameter, and had tightened the lateral landing gear cables and safety wired them. He also reduced the spring tension from 6 to 5-turns which he stated was the wrong thing to do. He said that to fix the landing gear so that this would not happen again he would need to do chrome work on the center bar and replace all the landing gear cables with a larger size.

According to the pilot damage to the airplane consisted of the right upper and lower wing, the left upper wing and the landing gear. In addition he stated that the parts that failed during the accident were the landing gear lateral cable and the spring windings. The pilot's recommendation to prevent this from happening again would be to have the airplane inspected by an FAA Inspector, and to do more taxi testing before flight.

Aircraft

Registration
N3124U
Reported as
Sherman John, H Nieuport II
Category
Airplane
Serial number
194
Engine
Volkswagen 1600, 60 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
John H. Sherman
Registered owner
John H. Sherman
Airworthiness certificate
Special, Experimental (Special)
Departed
PVT · Binghamton, NY
Destination
PVT · Binghamton, NY
Airport
1NK8 · Chenango Bridge Airport, runway 18, 1,700 × 145 ft, grass/turf

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
56
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Without waivers/limitations
Seat
Single
Flight hours
96 total · 4 in this make and model · 14 as pilot in command · 4 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Dusk
Wind
220° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
75 °F, dew point 50 °F
Altimeter
30.29 inHg
Observed at
BGM

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.